Keisel burst past Reid as if the 6-foot-7, 330-pounder wasn't there, blasting an unsuspecting Flacco from behind to force an incomplete pass.

It was Reid's Welcome-to-the-NFL kid moment in his first NFL start with the dreaded 'Look-out!' block, but he settled down after that play.

Now, he's preparing for another stout front seven Sunday against the San Diego Chargers. Reid has been practicing with the first-team offense all week and is slated to start again.

"Oh yeah, I'm looking to improve every week," Reid said. "I take what happened to me the first game and what happened to me and improve on it. I made some mistakes and I want to play a lot better this week."

A converted tackle, Reid allowed one quarterback pressure against Pittsburgh.

Ravens coach John Harbaugh said Reid, a 2011 third-round draft pick, improved after the missed block against Keisel.

"The Keisel play was probably the low point of the game for Jah, and it was the first play, so it got better after that," Harbaugh said. "It was a little bit of an eye-opener for him. Brett Keisel is a really good player. He played much better after that."